Stem sizing: Stem length impacts your riding position, efficiency and comfort. If you are male, and have generally average upper and lower body proportions for your height, the default size in the specs should be OK for you. Shorter lengths are for when the upper body is proportionally smaller than average (females generally fall into this category), or you want a more upright position. Longer lengths are for people with longer than average torsos, or for a more aero position.
Aluminum 4 Bolt Stem Our standard spec stem is a forged 6061 aluminum, 0 degree rise (parallel to the ground), for 1 1/8" threadless steerer tube and 26.0mm diameter handlebar center section. Available in 90, 100, 110, or 120mm extensions. I also have 80 and 130mm stems in Black, with a 7 degree rise. If you want to spec one of these stems, just note it in the Comments section of the order form. There is no upcharge.
Cro-moly Brazed/Lugged Stem This is a unique, hand brazed, lugged stem, that was added primarily for the Special, to compliment the brazed, lugged frame. However it is available as an upgrade on the Classic or Lightning as well. Made with 4130 cro-moly extension, with investment cast steerer and handlebar clamps, hand brazed construction. 0 degree rise (parallel to the ground), for 1 1/8" threadless steerer tube and 26.0mm diameter handlebar center section. Available only in 90, 100, 110 or 120mm extensions. Note, due to the hand built nature of this stem, there is a $100 upcharge for this model from the standard aluminum stem. Available in Black painted or Chrome finish.